after i visited the base with the u.s. defense secretary, leon panetta, and it's a sad reminder of how safe this country remains after 11 years of war. i'll ask the defense secretary about what's next here, as american troops prepare to leave afghanistan and about the fight for al qaeda. let's go "outfront." >>> good evening. i'm erin burnett live in kabul, afghanistan, tonight for a special edition of "outfront," as we focus on the future of afghanistan. i want to welcome our viewers in the united states tonight, as well as around the world. thanks for joining us. tonight, violence rocks afghanistan. a sobering reminder of how america's longest war is still not won. we still do not have a secure afghanistan. today, just hours after i wrapped up an interview with the secretary of defense, leon panetta, in kandahar at an american base, there was a brazen attack just outside that base. a suicide bomber struck, the taliban had taken responsibility, an american service member has been killed, two afghan civilians were killed. three americans and 18 afghans were wounded in this attack today